CN107739595A - A kind of inorganic phase-changing material for air conditioner cold accumulation and preparation method thereof - Google Patents
A kind of inorganic phase-changing material for air conditioner cold accumulation and preparation method thereof Download PDFInfo
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- CN107739595A CN107739595A CN201710759338.9A CN201710759338A CN107739595A CN 107739595 A CN107739595 A CN 107739595A CN 201710759338 A CN201710759338 A CN 201710759338A CN 107739595 A CN107739595 A CN 107739595A
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- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
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Abstract
A kind of inorganic phase-changing material for air conditioner cold accumulation, include each component of following parts by weight：0.1~0.5 part of 75~80 parts of sal glauberi, 7~10 parts of ammonium chloride, 2~4 parts of borax, 5~8 parts of hydrophily gas-phase silica, 2~4 parts of pH adjusting agent and conductive particle.Its preparation method is that (1) adds sal glauberi and ammonium chloride in a mixer, while opens heating and stirring, and heating is heated to 40~50 DEG C；(2) pH adjusting agent and borax, constant temperature stirring, until borax all dissolves are added；(3) hydrophily gas-phase silica is added in a mixer, constant temperature stirring at low speed, is subsequently added into conductive particle, then high-speed stirred, and phase-change material is made.The inorganic phase-changing material phase transition temperature for air conditioner cold accumulation of the present invention is 7~9 DEG C, and latent heat of phase change is 135~198J/g, to aluminium, stainless steel and copper without obvious corrosion.
Description
Technical field
The invention belongs to technical field of function materials, specially a kind of inorganic phase-changing material and its system for air conditioner cold accumulation
Preparation Method.
Background technology
Cold-storage refers to freeze in power network low ebb time at night, refrigeration host computer start and stored cold by cold-storage apparatus
Come, treat that daytime, power network peak Elapsed Time again discharged cold the needs for meeting peak air conditioner load.So, refrigeration system
Most of power consumption occur in the low power consumption phase at night, and peak of power consumption on daytime only has auxiliary equipment running, so as to realize use
Electric load " peak load shifting ".Technology of Cold Storage Air Conditions can effectively utilize electric energy, produce good economic benefit and social benefit.
At present, Cold Storage Material for Air Conditioning mainly has water, ice and phase-change material.Water cold storage is entered using the sensible heat between 4~7 DEG C
Row cold-storage.The shortcomings of storage density of cold is low, reservoir volume is big be present in water cold storage.Ice cold-storage is the phase transformation latent heat of solidification using water
To store cold, latent heat of phase change is big, but ice cold-storage phase transformation freezing point is low (0 DEG C), and larger degree of supercooling during cold-storage be present
(4~6 DEG C), evaporating temperature of the refrigeration machine when ice making fills cold are lower 8~10 DEG C than conventional non-cold accumulation system.This not only limit storage
The refrigeration machine species that cold air conditioning system can use, and the operational efficiency of refrigeration machine is reduced by 30%~40%, refrigeration unit
COP values decline, power consumption increase.It can overcome above-mentioned water and ice system really using the air-conditioning system of phase change material cool storage
It is fixed, there is big energy storage density, be 3~10 times of equal volume sensible heat cold-storage, and can directly utilize conventional refrigerant unit
Cold-storage is carried out, the evaporating temperature and COP values of refrigeration unit are improved, so as to improve the capacity usage ratio of system.So exploitation phase transformation
Temperature turns into focus of concern in 5~10 DEG C of phase-change material for cold storage.
Phase-change material is divided into inorganic material and organic material again.Organic phase change material has that solid forming is good, is not susceptible to
Phase separation machine surfusion, the advantages that corrosivity is smaller, but compared with inorganic phase-changing material, its thermal conductivity is poor, unit volume
Phase transformation potential is relatively low and volatile, easy firing, it is expensive the shortcomings of.Inorganic phase-changing material has high latent heat of phase change, is not easy
Combustion, it is cheap and be readily available, but leakage and etching problem be present in it.
Chinese patent literature [notification number：CN102405270A] a kind of phase change material composition is disclosed, comprising 50~
90wt% salt hydrate and 0~45wt% carbon black, salt hydrate sodium thiosulfate, sodium acetate, disodium hydrogen phosphate or carbonic acid
The hydrate of sodium, but the problem of corrosivity and supercooling be present in the material.Chinese patent literature [notification number：CN10220259A]
A kind of organic phase change material for air conditioner cold accumulation is disclosed, what main energy storage agent used is the mixture of ethylaminoethanol and water,
Solve the problems, such as to corrode and be subcooled, but have certain influence on environment.
The content of the invention
There is high latent heat of phase change for inorganic phase-changing material existing for solution prior art, nonflammable, cheap and appearance
Easily obtain, but the defects of leakage and etching problem be present in it, and the present invention provides a kind of inorganic-phase variable material for air conditioner cold accumulation
Material and preparation method thereof.
A kind of inorganic phase-changing material for air conditioner cold accumulation, include each component of following parts by weight：Sal glauberi 75
~80 parts, 7~10 parts of ammonium chloride, 2~4 parts of borax, 5~8 parts of hydrophily gas-phase silica, 2~4 parts of pH adjusting agent and conductive
0.1~0.5 part of grain.
Further, described pH adjusting agent is the mixture of sulfuric acid, boric acid or sulfuric acid and boric acid.Described conductive particle
It is made up of the one or more of copper particle, aluminum shot and titanium valve.
Further, pH adjusting agent adjusts the pH of the inorganic phase-changing material of air conditioner cold accumulation to 3~7.
Further, the phase transition temperature of the phase-change material is 7~9 DEG C, and latent heat of phase change is 135~198J/g.
A kind of preparation method of inorganic phase-changing material for air conditioner cold accumulation, comprises the following steps：
(1) sal glauberi and ammonium chloride are added in a mixer, while open heating and stirring, heating is heated to 40~
50℃；
(2) pH adjusting agent and borax, constant temperature stirring, until borax all dissolves are added；
(3) hydrophily gas-phase silica is added in a mixer, constant temperature stirring at low speed, is subsequently added into conductive particle, then it is high
Speed stirring, is made phase-change material.
Preferably, in step (3), stirring at low speed speed is 100~300r/min, high-speed stirred speed is 600~
800r/min。
Beneficial effect：The inorganic phase-changing material phase transition temperature for air conditioner cold accumulation of the present invention is 7~9 DEG C, latent heat of phase change
For 135~198J/g, aluminium, stainless steel and copper are corroded without obvious.
Brief description of the drawings
Fig. 1：The cooling curve of the embodiment of the present invention 3；
Fig. 2：The cooling curve of the embodiment of the present invention 4.
Embodiment
Embodiment 1
A kind of inorganic phase-changing material for air conditioner cold accumulation, include each component of following parts by weight：Sal glauberi 75
0.1 part of part, 7 parts of ammonium chloride, 2 parts of borax, 5 parts of hydrophily gas-phase silica, 2 parts of pH adjusting agent and conductive particle.
A kind of preparation method of inorganic phase-changing material for air conditioner cold accumulation, comprises the following steps：
(1) sal glauberi and ammonium chloride are added in a mixer, while opens heating and stirring, and heating is heated to 40
℃；
(2) pH adjusting agent and borax, constant temperature stirring, until borax all dissolves are added；
(3) hydrophily gas-phase silica is added in a mixer, 100r/min constant temperature stirring at low speed, is subsequently added into conductive
Grain, then 600r/min high-speed stirreds, phase-change material is made.
Preferably, in step (3), stirring at low speed speed is 100~300r/min, high-speed stirred speed is 600~
800r/min。
The phase transition temperature of present case phase-change material is 9 DEG C, enthalpy of phase change 145.96J/g；Degree of supercooling is 0.2 DEG C.
The inorganic phase-changing material of the present embodiment is tested to the corrosion test of common used material
Embodiment 2
A kind of inorganic phase-changing material for air conditioner cold accumulation, include each component of following parts by weight：Sal glauberi 80
0.5 part of part, 10 parts of ammonium chloride, 4 parts of borax, 8 parts of hydrophily gas-phase silica, 4 parts of pH adjusting agent and conductive particle.
A kind of preparation method of inorganic phase-changing material for air conditioner cold accumulation, comprises the following steps：
(1) sal glauberi and ammonium chloride are added in a mixer, while opens heating and stirring, and heating is heated to 50
℃；
(2) pH adjusting agent and borax, constant temperature stirring, until borax all dissolves are added；
(3) hydrophily gas-phase silica is added in a mixer, 300r/min constant temperature stirring at low speed, is subsequently added into conductive
Grain, then 800r/min high-speed stirreds, phase-change material is made.
The phase transition temperature of present case phase-change material is 8.5 DEG C, enthalpy of phase change 155.67J/g；Degree of supercooling is 0.2 DEG C.
The inorganic phase-changing material of the present embodiment is tested to the corrosion test of common used material
Embodiment 3
A kind of inorganic phase-changing material for air conditioner cold accumulation, include each component of following parts by weight：Sal glauberi
77%, ammonium chloride 8%, borax 4%, hydrophily gas-phase silica 6%, pH adjusting agent 4% and conductive particle 0.4%.Wherein,
Above-mentioned pH adjusting agent selects boric acid, and conductive particle selects copper powder, and pH is adjusted to 6.5.
A kind of preparation method of inorganic phase-changing material for air conditioner cold accumulation, comprises the following steps：
(1) sal glauberi and ammonium chloride are added in a mixer, while opens heating and stirring, and heating is heated to 40
℃；
(2) pH adjusting agent and borax, constant temperature stirring, until borax all dissolves are added；
(3) hydrophily gas-phase silica is added in a mixer, 200r/min constant temperature stirring at low speed, is subsequently added into conductive
Grain, then 600r/min high-speed stirreds, phase-change material is made.
The phase transition temperature of present case phase-change material is 8.8 DEG C, enthalpy of phase change 156.83J/g；Degree of supercooling is 0.3 DEG C, sees Fig. 1
It is shown.
The inorganic phase-changing material of the present embodiment is tested to the corrosion test of common used material
Embodiment 4
A kind of inorganic phase-changing material for air conditioner cold accumulation, include each component of following parts by weight：Sal glauberi
78%, ammonium chloride 10%, borax 4%, hydrophily gas-phase silica 4%, pH adjusting agent 4% and conductive particle 0.4%.Its
In, above-mentioned pH adjusting agent selects boric acid, and conductive particle selects copper powder, and pH is adjusted to 7.
A kind of preparation method of inorganic phase-changing material for air conditioner cold accumulation, comprises the following steps：
(1) sal glauberi and ammonium chloride are added in a mixer, while opens heating and stirring, and heating is heated to 40
℃；
(2) pH adjusting agent and borax, constant temperature stirring, until borax all dissolves are added；
(3) hydrophily gas-phase silica is added in a mixer, 200r/min constant temperature stirring at low speed, is subsequently added into conductive
Grain, then 700r/min high-speed stirreds, phase-change material is made.
The phase transition temperature of present case phase-change material is 7.5 DEG C, enthalpy of phase change 161.36J/g；Degree of supercooling is 0.2 DEG C, sees figure
2。
The inorganic phase-changing material of the present embodiment is tested to the corrosion test of common used material
Claims (7)
1. a kind of inorganic phase-changing material for air conditioner cold accumulation, it is characterised in that include each component of following parts by weight：Ten water
75~80 parts of sodium sulphate, 7~10 parts of ammonium chloride, 2~4 parts of borax, 5~8 parts of hydrophily gas-phase silica, 2~4 parts of pH adjusting agent
With 0.1~0.5 part of conductive particle.
2. it is used for the inorganic phase-changing material of air conditioner cold accumulation as claimed in claim 1, it is characterised in that described pH adjusting agent is
The mixture of sulfuric acid, boric acid or sulfuric acid and boric acid.
3. it is used for the inorganic phase-changing material of air conditioner cold accumulation as claimed in claim 1 or 2, it is characterised in that described conductive
Grain is made up of the one or more of copper particle, aluminum shot and titanium valve.
4. it is used for the inorganic phase-changing material of air conditioner cold accumulation as claimed in claim 3, it is characterised in that pH adjusting agent stores air-conditioning
The pH of cold inorganic phase-changing material is adjusted to 3~7.
5. it is used for the inorganic phase-changing material of air conditioner cold accumulation as claimed in claim 1, it is characterised in that the phase transformation of the phase-change material
Temperature is 7~9 DEG C, and latent heat of phase change is 135~198J/g.
6. as claimed in claim 1 for air conditioner cold accumulation inorganic phase-changing material preparation method, it is characterised in that including with
Lower step：
(1) sal glauberi and ammonium chloride are added in a mixer, while opens heating and stirring, and heating is heated to 40~50
℃；
(2) pH adjusting agent and borax, constant temperature stirring, until borax all dissolves are added；
(3) hydrophily gas-phase silica is added in a mixer, constant temperature stirring at low speed, is subsequently added into conductive particle, then high-speed stirring
Mix, phase-change material is made.
7. it is used for the preparation method of the inorganic phase-changing material of air conditioner cold accumulation as claimed in claim 6, it is characterised in that in step
(3) in, stirring at low speed speed is 100~300r/min, and high-speed stirred speed is 600~800r/min.
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Cited By (5)
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| CN109294524A (en) * | 2018-11-21 | 2019-02-01 | 江苏昂彼特堡能源科技有限公司 | A kind of phase-change material for cold storage and preparation method thereof |
| CN109762529A (en) * | 2019-01-14 | 2019-05-17 | 南京航空航天大学 | A kind of phase-change material and preparation method thereof for air conditioner cold accumulation |
| CN111320969A (en) * | 2020-04-03 | 2020-06-23 | 新奥（内蒙古）石墨烯材料有限公司 | Phase change cold accumulation compound and preparation method thereof |
| CN114032074A (en) * | 2021-12-03 | 2022-02-11 | 深圳市爱能森科技有限公司 | Phase-change heat storage material and preparation method thereof |
| CN115418195A (en) * | 2022-08-18 | 2022-12-02 | 嘉兴赛曼泰克新材料有限公司 | Composite phase-change heat storage material for lithium battery pack heat management and preparation method thereof |
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Cited By (5)
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|---|---|---|---|---|
| CN109294524A (en) * | 2018-11-21 | 2019-02-01 | 江苏昂彼特堡能源科技有限公司 | A kind of phase-change material for cold storage and preparation method thereof |
| CN109762529A (en) * | 2019-01-14 | 2019-05-17 | 南京航空航天大学 | A kind of phase-change material and preparation method thereof for air conditioner cold accumulation |
| CN111320969A (en) * | 2020-04-03 | 2020-06-23 | 新奥（内蒙古）石墨烯材料有限公司 | Phase change cold accumulation compound and preparation method thereof |
| CN114032074A (en) * | 2021-12-03 | 2022-02-11 | 深圳市爱能森科技有限公司 | Phase-change heat storage material and preparation method thereof |
| CN115418195A (en) * | 2022-08-18 | 2022-12-02 | 嘉兴赛曼泰克新材料有限公司 | Composite phase-change heat storage material for lithium battery pack heat management and preparation method thereof |
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Application publication date: 20180227 |